private void connect(Context ctx, final InitCallback callback) {
try {
androidClient = new MqttAndroidClient(ctx, url, deviceId, clientPersistance);
androidClient.connect(
opts,
ctx,
new IMqttActionListener() {
@Override
public void onFailure(IMqttToken arg0, Throwable arg1) {
Log.i(DEBUG_TAG, "Could not connect to MQTT broker: " + arg1.getMessage());
callback.error(new ClearBladeException(arg1.getMessage()));
}
@Override
public void onSuccess(IMqttToken arg0) {
Log.i(DEBUG_TAG, "Client Connected");
if (isSubscribed) {
Iterator<String> it = Message.subscribed.iterator();
while (it.hasNext()) {
subscribe(it.next());
}
}
callback.done(true);
}
});
androidClient.setCallback(this);
} catch (MqttException err) {
Log.i(DEBUG_TAG, err.getLocalizedMessage());
}
}
public void unsubscribe(String topic) {
if (androidClient.isConnected()) {
try {
androidClient.unsubscribe(topic);
} catch (MqttException err) {
Log.i(DEBUG_TAG, err.getLocalizedMessage());
}
} else {
Log.i(DEBUG_TAG, "Could not unsubscribe. Client is not connected. Please connect first.");
}
}
public void disconnect() {
if (androidClient.isConnected()) {
try {
androidClient.disconnect();
Log.i(DEBUG_TAG, "Client Disconnected");
} catch (MqttException err) {
Log.i(DEBUG_TAG, err.getLocalizedMessage());
}
} else {
Log.i(DEBUG_TAG, "Client is already disconnected");
}
}
public void publish(String topic, byte[] payload) {
if (androidClient.isConnected()) {
try {
androidClient.publish(topic, payload, qualityOfService, false);
} catch (MqttPersistenceException e) {
Log.i(DEBUG_TAG, e.getLocalizedMessage());
} catch (MqttException e) {
Log.i(DEBUG_TAG, e.getLocalizedMessage());
}
} else {
Log.i(DEBUG_TAG, "Could not publish. Client is not connected. Please connect first.");
}
}
public boolean subscribe(final String topic) {
if (androidClient.isConnected()) {
try {
androidClient.subscribe(topic, qualityOfService);
isSubscribed = true;
return true;
} catch (MqttException err) {
Log.i(DEBUG_TAG, err.getLocalizedMessage());
return false;
}
} else {
Log.i(DEBUG_TAG, "Could not subscribe. Client is not connected. Please connect first.");
return false;
}
}